Following on from the Catalogo del fondo librario antico della Fondazione Giorgio Cini compiled by Dennis E. Rhodes and published by Olschki in 2011, the Catalogo del fondo Cesare Grassetti della Fondazione Giorgio Cini has been published in the same series, entitled “Biblio- teca di Bibliografia”. Put together by the Milanese lawyer Cesare Grassetti from the 1950s to the late 1980s, the collection consists of over 830 15th- and 16th-century editions, already included in the library’s electronic catalogue. Working for this printed catalogue, however, enabled the authors to examine the books in greater depth, with a special focus on the data relating to specific copies. The Grassetti Collection fits in well with the Foundation’s “original” collection, enhancing not only the section of Venetian editions (the library has a remarkable group of them), but also the productions from minor printing centres, thus increasing the number of unique exemplars preserved on San Giorgio.